2 Moll. 
VII. MOLLUSCA. 
[ 1904 ] 
INTRODUCTION. 
Though the literature for the year 1904 shows an increase over that for 
the previous year, this may, in a measure, be accounted for by the fact 
that the ‘ Record ’ has been kept open until a slightly later date. 
As in past years, Tryon’s (619) ‘ManuaT has regularly appeared, 
Mr Pilsbry being now engaged on the account of the Achatinidce. Eleven 
parts of the ‘ Conchylien- Cabinet’ (426) have been issued, dealing with 
Helix , Naninida ?, Agnatha , and Chitonidte. A small portion of Bronn’s 
(86) ‘ Klassen, &c.’ has appeared, and a further livraison of Cossmann’s 
(140) very useful ‘ Essais de Paldoconchologie.’ The latter author has 
also commenced, with Pissarro (144), an illustrated ‘ Iconographie ’ in 
which it is proposed to figure all the known fossils of the Paris Basin ; the 
checklist of this fauna compiled by ChIcdiSville (111) has now been com- 
pleted. Hidalgo (304, 305) has issued a further portion of his ‘ Obras,’ and 
commenced a catalogue of the Philippine fauna. Kobelt (355) has made 
progress with his account of the European Marine Mollusca, and has in 
Rossmaessler (543) given a summary of the non-marine shells, with an 
index to previous volumes of this work. To Sacco (546) we owe a supple- 
ment, with a necessary index, to his Tertiary fauna of Liguria. The 
Pteropods of the ‘Siboga’ Expedition have been dealt with by Tesch (610), 
and the He^eropods collected during several voyages of the ‘ Princesse- 
Alice’ have received attention from VAYSSifeRE (627). It may also be 
mentioned that a list of papers published in the ‘Nachrbl. Deutsch. malak. 
Ges.’, complete from the beginning, has been issued. 
The papers dealing solely with the descriptions of new forms appear to 
be slightly less numerous than usual. Amongst those dealing with non- 
marine Molluscs, we may specially note Pilsbry and Hirase (495-497) 
upon Japanese forms. Andreae (16) has described the shells collected in 
Central Asia during Futterer’s Expedition, and Gude (273) has completed 
his list of the Helicoids of that continent by some additions and corrections. 
A reprint of Morlet’s (450) papers on the fauna of Indo-China, will prove 
of service, as also the list of the shells of that region given by Fischer and 
Dautzenberg (223). Simroth (567) has published a useful paper on the 
slugs of Abyssinia ; and Rochebrune and Germain (534) have issued, 
unfortunately without figures, diagnoses of some Central African shells. 
A little work, of a popular type, on the Molluscs of Germany, has been 
written by Lehmann (393), while Taylor (609) has continued his account 
of the British fauna. Two papers by Hudleston (314) and Smith (575), 
dealing with the fauna of Lake Tanganyika, in the light of the hypothesis 
put forward some years ago as to its origin, should not be overlooked. 
Hutton’s (317) ‘Index’ to the New Zealand fauna, and Keep’s (345) 
work on West American shells relate both to marine and non -marine 
molluscs. 
Turning to marine shells, we may notice Hagg’s (277) account of the 
forms collected during the Swedish Polar Expedition. Jatta (330) and 
Kwietniewski (377) have dealt, respectively, with Mediterranean Cephalo- 
pods and Pteropods, while Sykes (604) has commenced a supplemental 
account to that published of the ‘ Porcupine ’ Expedition. Some molluscs 
from Northern Africa have been catalogued and described by Pallary (467, 
468), though it is doubtful whether the validity of all his new species can 
be maintained. Some new forms have been described from South Africa 
by Sowerby (589), and Smith (578) has issued a useful addendum to the 
known fauna, while he has also (579) dealt with some forms from the Bay 
of Bengal. The Nudibranch fauna of East Africa has been noticed by Eliot 
(208-210), and Melvill (433, &c.) has described some species from the 
